[Objective] In this study,the climatic features and overwintering sage storage methods of seed-stem of cassava in cassava-planting areas were investigated aiming at providing a technical guidance for sustainable devel...[Objective] In this study,the climatic features and overwintering sage storage methods of seed-stem of cassava in cassava-planting areas were investigated aiming at providing a technical guidance for sustainable development of cassava industry in China.[Method] The seed-stem of cassava was overwintered through keeping in field,piling up in the open air,burying in soil or piling up in greenhouses in Hepu,Nanning and Laibin of Guangxi,Hunan and Zhejiang.After the beginning of spring,the survival buds in seed stem of cassava were counted.And then the survival rates of buds were calculated for different storage methods.[Result] In Hepu,where the seed-stem of cassava was piled up in the open air for overwintering,the survival rates of buds were all higher than 90.00%.In particular,the survival rate of buds in seed-stem of cassava that was buried shallowly in the open field was highest（94.38%）.In Nanning,the seed-stem of cassava that was stored in greenhouses had the highest survival rate（94.98%） of buds.In Laibin,the seed-stem of cassava was usually stacked in greenhouses.Thus the survival rates of buds were almost all higher than 89.60%.Particularly,the survival rate of buds in seed-stem of cassava that was buried horizontally in soil and covered with sugarcane leaves reached the peak（98.79%）.In Jiangyong and Hangzhou,the seedstem of cassava was stored in specific facilities.So the survival rates of buds were relatively high.[Conclusion] In the frost-free areas south of 21.6° N（south of Maoming（Guangdong）-Hepu（Guangxi）-Jinghong（Yunnan））,the seed-stem of cassava can be buried shallowly in the open air or stacked and covered with film.In the light to heavy-frost areas（21.6° N-23.8° N,south of Qingyuan（Guangdong）-Laibin（Guangxi）-Lincang（Yunnan））,the seed-stem of cassava can be stacked in greenhouses,stacked and covered with film in the open air or buried vertically in greenhouses.In the heavy-frost areas and low-temperature areas north of 23.8° N（north of Qingyuan（Guangdong）-Laibin（Guangxi）-Lincang（Yunnan） to HunanJiangxi-Zhejiang）,the seed-stem of cassava can be stored in coldness-resistant caves or cellars or stacked vertically in greenhouses along with small sheds.展开更多
探究聚-γ-谷氨酸(γ-PGA)对直播稻抗倒伏性、产量和品质的影响,为高产优质的水稻栽培技术提供理论依据和技术参考。于2022和2023年在湖北省武穴市花桥镇开展田间试验,采用双因素裂区设计,以直播方式水直播(W)和旱直播(D)为主区,不施加...探究聚-γ-谷氨酸(γ-PGA)对直播稻抗倒伏性、产量和品质的影响,为高产优质的水稻栽培技术提供理论依据和技术参考。于2022和2023年在湖北省武穴市花桥镇开展田间试验,采用双因素裂区设计,以直播方式水直播(W)和旱直播(D)为主区,不施加γ-PGA发酵液(P0)和施加25 kg hm–2γ-PGA发酵液(P1)为副区,共4个处理,对水稻抗倒伏能力相关指标、产量、稻米品质进行测定。结果表明,施加γ-PGA能分别使水、旱直播下水稻第一基节茎粗增加10.3%~10.6%和7.5%~13.3%,第二基节茎粗增加10.5%~11.8%和8.2%~17.5%,茎秆壁厚增加23.7%~27.9%和12.5%~22.0%,抗折能力提高37.3%~52.7%和50.8%~54.5%,弯曲力矩提高3.8%~7.6%和4.1%~5.9%,折断弯矩提高37.3%~52.7%和50.8%~54.5%,倒伏指数降低21.9%~29.1%和30.2%~32.2%。施加γ-PGA能改变水稻的茎秆强度,提高产量和稻米品质。展开更多
The rooting and growth of frozen cassava under different chemical treatments were studied.The result has demonstrated that disinfection effect could increase rooting rate and seedling emergence rate of cassava seed st...The rooting and growth of frozen cassava under different chemical treatments were studied.The result has demonstrated that disinfection effect could increase rooting rate and seedling emergence rate of cassava seed stem and decrease the rate of mildew.The sportak treatment could generate better effect(rooting rate and seedling emergence rate were 63%,the mildew rate of stem was 28%).Among different rooting reagents,Genwang+lime treatment generated better effect on rooting rate and emergence rate of frozen cassava than these of other groups and control group.It was concluded from the effects of different rooting reagents on growth of seed stem that Genwang+lime treatment could promote elongation and growth of cassava significantly(the mean plant height of experimental groups inceased 8.58 cm compared with that of control group) while paclobutrazol+lime generated the best effect on crassation of stem(the stem diameter of experimental group increased 0.4 cm compared with that of control group).展开更多
基金Supported by Scientist Program for Seedling Breeding of National Cassava IndustryTechnology System(CARS-12-gxwbh)Key Science and Technology Program ofGuangxi Province(1222014-2C)~~
文摘[Objective] In this study,the climatic features and overwintering sage storage methods of seed-stem of cassava in cassava-planting areas were investigated aiming at providing a technical guidance for sustainable development of cassava industry in China.[Method] The seed-stem of cassava was overwintered through keeping in field,piling up in the open air,burying in soil or piling up in greenhouses in Hepu,Nanning and Laibin of Guangxi,Hunan and Zhejiang.After the beginning of spring,the survival buds in seed stem of cassava were counted.And then the survival rates of buds were calculated for different storage methods.[Result] In Hepu,where the seed-stem of cassava was piled up in the open air for overwintering,the survival rates of buds were all higher than 90.00%.In particular,the survival rate of buds in seed-stem of cassava that was buried shallowly in the open field was highest（94.38%）.In Nanning,the seed-stem of cassava that was stored in greenhouses had the highest survival rate（94.98%） of buds.In Laibin,the seed-stem of cassava was usually stacked in greenhouses.Thus the survival rates of buds were almost all higher than 89.60%.Particularly,the survival rate of buds in seed-stem of cassava that was buried horizontally in soil and covered with sugarcane leaves reached the peak（98.79%）.In Jiangyong and Hangzhou,the seedstem of cassava was stored in specific facilities.So the survival rates of buds were relatively high.[Conclusion] In the frost-free areas south of 21.6° N（south of Maoming（Guangdong）-Hepu（Guangxi）-Jinghong（Yunnan））,the seed-stem of cassava can be buried shallowly in the open air or stacked and covered with film.In the light to heavy-frost areas（21.6° N-23.8° N,south of Qingyuan（Guangdong）-Laibin（Guangxi）-Lincang（Yunnan））,the seed-stem of cassava can be stacked in greenhouses,stacked and covered with film in the open air or buried vertically in greenhouses.In the heavy-frost areas and low-temperature areas north of 23.8° N（north of Qingyuan（Guangdong）-Laibin（Guangxi）-Lincang（Yunnan） to HunanJiangxi-Zhejiang）,the seed-stem of cassava can be stored in coldness-resistant caves or cellars or stacked vertically in greenhouses along with small sheds.
文摘探究聚-γ-谷氨酸(γ-PGA)对直播稻抗倒伏性、产量和品质的影响,为高产优质的水稻栽培技术提供理论依据和技术参考。于2022和2023年在湖北省武穴市花桥镇开展田间试验,采用双因素裂区设计,以直播方式水直播(W)和旱直播(D)为主区,不施加γ-PGA发酵液(P0)和施加25 kg hm–2γ-PGA发酵液(P1)为副区,共4个处理,对水稻抗倒伏能力相关指标、产量、稻米品质进行测定。结果表明,施加γ-PGA能分别使水、旱直播下水稻第一基节茎粗增加10.3%~10.6%和7.5%~13.3%,第二基节茎粗增加10.5%~11.8%和8.2%~17.5%,茎秆壁厚增加23.7%~27.9%和12.5%~22.0%,抗折能力提高37.3%~52.7%和50.8%~54.5%,弯曲力矩提高3.8%~7.6%和4.1%~5.9%,折断弯矩提高37.3%~52.7%和50.8%~54.5%,倒伏指数降低21.9%~29.1%和30.2%~32.2%。施加γ-PGA能改变水稻的茎秆强度,提高产量和稻米品质。
文摘The rooting and growth of frozen cassava under different chemical treatments were studied.The result has demonstrated that disinfection effect could increase rooting rate and seedling emergence rate of cassava seed stem and decrease the rate of mildew.The sportak treatment could generate better effect(rooting rate and seedling emergence rate were 63%,the mildew rate of stem was 28%).Among different rooting reagents,Genwang+lime treatment generated better effect on rooting rate and emergence rate of frozen cassava than these of other groups and control group.It was concluded from the effects of different rooting reagents on growth of seed stem that Genwang+lime treatment could promote elongation and growth of cassava significantly(the mean plant height of experimental groups inceased 8.58 cm compared with that of control group) while paclobutrazol+lime generated the best effect on crassation of stem(the stem diameter of experimental group increased 0.4 cm compared with that of control group).
